Region

Bulk power system reliability regions in North America.

Definition by NERC

Regional Maps (from ¹)

Source: ²

NERC divides North America into several regions for the purpose of reliability and coordination. Each region is responsible for ensuring the reliability of the bulk power system within its boundaries. The six regions are:

• MRO: Midwest Reliability Organization
• NPCC: Northeast Power Coordinating Council
• RF: ReliabilityFirst
• SERC: SERC Reliability Corporation
• Texas RE: Texas Reliability Entity
• WECC: Western Electricity Coordinating Council

---

Last modified: 2025-06-17

Machine-readable: JSON

Related: zone · subregions · control-area · balancing-authority-area · reliability-coordinator-area

← Reasoning · Regulating Reserve →

---

1. NERC (2024). Technical Rationale and Justification for TPL-008-1. https://www.nerc.com/pa/Stand/Project202307ModtoTPL00151TransSystPlanPerfReqExWe/2023-07_TPL-008-1%20Technical%20Rationale_032024.pdf ↩

2. NERC (2025). Glossary of Terms Used in NERC Reliability Standards. https://www.nerc.com/pa/Stand/Glossary%20of%20Terms/Glossary_of_Terms.pdf ↩